// -------------------------------------------------
// BlinKit - BlinKit Library
// -------------------------------------------------
//   File Name: WebScrollbarThemeClientImpl.cpp
// Description: WebScrollbarThemeClientImpl Class
//      Author: Ziming Li
//     Created: 2021-08-01
// -------------------------------------------------
// Copyright (C) 2021 MingYang Software Technology.
// -------------------------------------------------

/*
 * Copyright (C) 2012 Google Inc. All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 * 1.  Redistributions of source code must retain the above copyright
 *     notice, this list of conditions and the following disclaimer.
 * 2.  Redistributions in binary form must reproduce the above copyright
 *     notice, this list of conditions and the following disclaimer in the
 *     documentation and/or other materials provided with the distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "AS IS" AND ANY
 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
 * DISCLAIMED. IN NO EVENT SHALL APPLE OR ITS CONTRIBUTORS BE LIABLE FOR ANY
 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */

#include "platform/exported/WebScrollbarThemeClientImpl.h"

#include "platform/scroll/ScrollbarTheme.h"

namespace blink {

WebScrollbarThemeClientImpl::WebScrollbarThemeClientImpl(WebScrollbar& scrollbar)
    : m_scrollbar(scrollbar)
{
    ScrollbarTheme::theme().registerScrollbar(*this);
}

WebScrollbarThemeClientImpl::~WebScrollbarThemeClientImpl()
{
    ScrollbarTheme::theme().unregisterScrollbar(*this);
}

int WebScrollbarThemeClientImpl::x() const
{
    return location().x();
}

int WebScrollbarThemeClientImpl::y() const
{
    return location().y();
}

int WebScrollbarThemeClientImpl::width() const
{
    return size().width();
}

int WebScrollbarThemeClientImpl::height() const
{
    return size().height();
}

IntSize WebScrollbarThemeClientImpl::size() const
{
    return m_scrollbar.size();
}

IntPoint WebScrollbarThemeClientImpl::location() const
{
    return m_scrollbar.location();
}

Widget* WebScrollbarThemeClientImpl::parent() const
{
    // Unused by Chromium scrollbar themes.
    ASSERT_NOT_REACHED();
    return 0;
}

Widget* WebScrollbarThemeClientImpl::root() const
{
    // Unused by Chromium scrollbar themes.
    ASSERT_NOT_REACHED();
    return 0;
}

void WebScrollbarThemeClientImpl::setFrameRect(const IntRect&)
{
    // Unused by Chromium scrollbar themes.
    ASSERT_NOT_REACHED();
}

IntRect WebScrollbarThemeClientImpl::frameRect() const
{
    return IntRect(location(), size());
}

void WebScrollbarThemeClientImpl::invalidate()
{
    // Unused by Chromium scrollbar themes.
    ASSERT_NOT_REACHED();
}

void WebScrollbarThemeClientImpl::invalidateRect(const IntRect&)
{
    // Unused by Chromium scrollbar themes.
    ASSERT_NOT_REACHED();
}

ScrollbarOverlayStyle WebScrollbarThemeClientImpl::scrollbarOverlayStyle() const
{
    return static_cast<ScrollbarOverlayStyle>(m_scrollbar.scrollbarOverlayStyle());
}

void WebScrollbarThemeClientImpl::getTickmarks(std::vector<IntRect>& tickmarks) const
{
    m_scrollbar.getTickmarks(tickmarks);
}

bool WebScrollbarThemeClientImpl::isScrollableAreaActive() const
{
    return m_scrollbar.isScrollableAreaActive();
}

IntPoint WebScrollbarThemeClientImpl::convertFromRootFrame(const IntPoint& pointInRootFrame) const
{
    // Unused by Chromium scrollbar themes.
    ASSERT_NOT_REACHED();
    return pointInRootFrame;
}

bool WebScrollbarThemeClientImpl::isCustomScrollbar() const
{
    return m_scrollbar.isCustomScrollbar();
}

ScrollbarOrientation WebScrollbarThemeClientImpl::orientation() const
{
    return static_cast<ScrollbarOrientation>(m_scrollbar.orientation());
}

bool WebScrollbarThemeClientImpl::isLeftSideVerticalScrollbar() const
{
    return m_scrollbar.isLeftSideVerticalScrollbar();
}

int WebScrollbarThemeClientImpl::value() const
{
    return m_scrollbar.value();
}

float WebScrollbarThemeClientImpl::currentPos() const
{
    return value();
}

int WebScrollbarThemeClientImpl::visibleSize() const
{
    return totalSize() - maximum();
}

int WebScrollbarThemeClientImpl::totalSize() const
{
    return m_scrollbar.totalSize();
}

int WebScrollbarThemeClientImpl::maximum() const
{
    return m_scrollbar.maximum();
}

ScrollbarControlSize WebScrollbarThemeClientImpl::controlSize() const
{
    return static_cast<ScrollbarControlSize>(m_scrollbar.controlSize());
}

ScrollbarPart WebScrollbarThemeClientImpl::pressedPart() const
{
    return static_cast<ScrollbarPart>(m_scrollbar.pressedPart());
}

ScrollbarPart WebScrollbarThemeClientImpl::hoveredPart() const
{
    return static_cast<ScrollbarPart>(m_scrollbar.hoveredPart());
}

void WebScrollbarThemeClientImpl::styleChanged()
{
    ASSERT_NOT_REACHED();
}

void WebScrollbarThemeClientImpl::visibilityChanged()
{
}

bool WebScrollbarThemeClientImpl::enabled() const
{
    return m_scrollbar.enabled();
}

void WebScrollbarThemeClientImpl::setEnabled(bool)
{
    ASSERT_NOT_REACHED();
}

bool WebScrollbarThemeClientImpl::isOverlayScrollbar() const
{
    return m_scrollbar.isOverlay();
}

float WebScrollbarThemeClientImpl::elasticOverscroll() const
{
    return m_scrollbar.elasticOverscroll();
}

void WebScrollbarThemeClientImpl::setElasticOverscroll(float elasticOverscroll)
{
    return m_scrollbar.setElasticOverscroll(elasticOverscroll);
}

String WebScrollbarThemeClientImpl::debugName() const
{
    return "WebScrollbarThemeClientImpl";
}

} // namespace blink
